PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/31-23:12:50
G01     38.5           12.2                7.5 +/-    3.64      20.0 +/-    3.64  0.180 / 0.140
G02     199.2          13.3               13.5 +/-    3.28      35.0 +/-    3.28  0.090 / 0.140
G06     176.7          41.3               13.6 +/-    0.83      19.4 +/-    0.83  0.040 / 0.060
G13     232.6          19.0               12.5 +/-    2.94      28.3 +/-    2.94  0.040 / 0.050
G17     13.4           65.5                9.6 +/-    1.11      10.5 +/-    1.11  0.040 / 0.030
G19     292.8          71.0               10.1 +/-    0.40      10.6 +/-    0.40  0.050 / 0.030
G24     313.8          24.7                7.5 +/-    1.91      14.7 +/-    1.91  0.100 / 0.180
G28     74.4           47.4               11.3 +/-    0.96      14.7 +/-    0.96  0.440 / 0.260
G30     155.5          21.7               14.0 +/-    1.24      29.5 +/-    1.24  0.150 / 0.150