PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/26-07:27:50
G01     258.9          38.5                4.9 +/-    2.14       7.3 +/-    2.14  0.060 / 0.090
G03     316.4          35.0                3.5 +/-    1.47       5.5 +/-    1.47  0.050 / 0.080
G10     134.3          11.0                4.3 +/-    1.89      11.7 +/-    1.89  0.060 / 0.070
G11     240.0          16.7                5.6 +/-    3.29      13.3 +/-    3.29  0.060 / 0.080
G14     54.6           43.4                2.8 +/-    1.30       3.9 +/-    1.30  0.200 / 0.240
G22     311.0          61.0                2.9 +/-    1.08       3.3 +/-    1.08  0.190 / 0.260
G25     41.5           10.8                0.6 +/-    2.32       1.6 +/-    2.32  0.040 / 0.030
G26     143.1          31.6                3.0 +/-    1.65       5.0 +/-    1.65  0.040 / 0.030
G31     43.5           65.6                1.4 +/-    0.36       1.5 +/-    0.36  0.040 / 0.070
G32     71.2           27.8                1.3 +/-    1.06       2.3 +/-    1.06  0.040 / 0.080