PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/04-00:12:30
G02     199.5          20.1               15.9 +/-    1.18      35.0 +/-    1.18  0.040 / 0.070
G06     172.2          51.3               15.2 +/-    1.30      18.9 +/-    1.30  0.040 / 0.090
G13     229.2          14.5               13.8 +/-    2.51      34.6 +/-    2.51  0.090 / 0.190
G17     12.4           64.4                9.5 +/-    0.93      10.4 +/-    0.93  0.080 / 0.190
G19     313.9          71.2               10.9 +/-    0.82      11.4 +/-    0.82  0.030 / 0.050
G24     311.6          27.8               10.0 +/-    1.72      18.3 +/-    1.72  0.030 / 0.050
G28     86.0           40.5               12.0 +/-    0.95      17.2 +/-    0.95  0.050 / 0.040
G30     156.2          14.6               15.9 +/-    2.01      39.9 +/-    2.01  0.040 / 0.060