PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/13-00:57:50
G02     21.3           64.9                9.4 +/-    0.63      10.3 +/-    0.63  0.030 / 0.030
G05     152.4          51.1               12.9 +/-    0.47      16.1 +/-    0.47  0.020 / 0.030
G06     47.8           25.1               10.2 +/-    2.05      19.9 +/-    2.05  0.030 / 0.040
G12     234.1          79.0               11.0 +/-    0.59      11.2 +/-    0.59  0.030 / 0.040
G19     89.3           18.5               11.0 +/-    1.40      25.0 +/-    1.40  0.390 / 0.400
G24     216.4          11.2               11.5 +/-   22.66      31.3 +/-   22.66  0.290 / 0.570
G25     310.8          43.2               10.2 +/-    0.95      14.1 +/-    0.95  0.050 / 0.070
G29     298.1          18.5                9.8 +/-    1.60      22.3 +/-    1.60  0.060 / 0.070