PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/21-00:58:00
G01     38.7           12.1                6.4 +/-    3.08      17.1 +/-    3.08  0.130 / 0.190
G02     198.9          14.9               12.3 +/-    2.39      30.5 +/-    2.39  0.270 / 0.150
G06     174.4          44.7               10.4 +/-    0.86      14.1 +/-    0.86  0.030 / 0.030
G13     233.6          18.2               10.0 +/-    1.93      23.0 +/-    1.93  0.030 / 0.030
G17     4.8            68.0                6.7 +/-    0.41       7.2 +/-    0.41  0.040 / 0.040
G19     295.5          70.9                6.6 +/-    0.64       6.9 +/-    0.64  0.040 / 0.060
G24     314.6          23.4                6.4 +/-    1.28      13.0 +/-    1.28  0.060 / 0.060
G28     79.4           43.5                7.9 +/-    1.59      10.9 +/-    1.59  0.050 / 0.070
G30     155.1          19.4               11.1 +/-    1.85      24.7 +/-    1.85  0.140 / 0.090