PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/17-16:43:00
G01     283.2          41.1                9.0 +/-    1.54      12.8 +/-    1.54  0.020 / 0.030
G03     314.3          24.7                9.6 +/-    4.06      18.9 +/-    4.06  0.020 / 0.030
G10     124.1          24.5               10.6 +/-    2.36      20.9 +/-    2.36  0.050 / 0.080
G11     262.1          23.9                9.0 +/-    1.74      18.0 +/-    1.74  0.040 / 0.080
G14     30.2           56.4                6.2 +/-    0.64       7.3 +/-    0.64  0.060 / 0.120
G22     314.7          45.1                8.0 +/-    1.85      10.8 +/-    1.85  0.060 / 0.110
G25     61.5           18.9                9.1 +/-    0.89      20.5 +/-    0.89  0.040 / 0.080
G26     152.8          18.0               13.4 +/-    1.03      31.0 +/-    1.03  0.040 / 0.070
G31     88.6           79.4               10.0 +/-    0.59      10.2 +/-    0.59  0.090 / 0.090
G32     56.9           37.6                6.6 +/-    0.98      10.0 +/-    0.98  0.060 / 0.090