PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/08-01:57:40
G02     236.9          75.7               10.9 +/-    0.65      11.2 +/-    0.65  0.050 / 0.040
G05     171.5          15.2               12.8 +/-    1.47      31.7 +/-    1.47  0.040 / 0.050
G06     41.3           61.0                9.3 +/-    0.47      10.4 +/-    0.47  0.030 / 0.030
G12     321.4          49.1                9.4 +/-    0.69      12.0 +/-    0.69  0.040 / 0.030
G17     67.2           27.1                7.3 +/-    0.76      13.6 +/-    0.76  0.120 / 0.150
G19     54.5           40.5                8.7 +/-    0.57      12.5 +/-    0.57  0.180 / 0.220
G24     248.0          36.0               11.7 +/-    1.57      18.2 +/-    1.57  0.100 / 0.080