PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/18-16:58:10
G01     270.5          40.8                8.7 +/-    2.92      12.4 +/-    2.92  0.040 / 0.050
G03     316.2          32.8                6.2 +/-    2.07      10.3 +/-    2.07  0.040 / 0.050
G10     129.9          17.1                9.4 +/-    1.32      22.2 +/-    1.32  0.060 / 0.080
G11     253.1          20.3                6.6 +/-    3.03      14.4 +/-    3.03  0.250 / 0.200
G14     42.0           51.0                7.4 +/-    1.20       9.3 +/-    1.20  0.030 / 0.030
G22     314.1          53.6                7.6 +/-    1.07       9.2 +/-    1.07  0.050 / 0.030
G25     52.7           17.1                7.2 +/-    2.00      16.9 +/-    2.00  0.080 / 0.050
G26     147.2          25.5               12.0 +/-    1.03      23.3 +/-    1.03  0.050 / 0.060
G31     53.9           73.0                7.4 +/-    0.26       7.7 +/-    0.26  0.080 / 0.130
G32     64.9           31.7                6.2 +/-    2.03      10.4 +/-    2.03  0.080 / 0.110