PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/04-21:43:00
G01     96.9           30.0               14.2 +/-    1.21      24.9 +/-    1.21  0.110 / 0.150
G07     119.5          51.0               13.3 +/-    0.86      16.6 +/-    0.86  0.220 / 0.350
G08     42.2           16.5                9.8 +/-    2.05      23.6 +/-    2.05  0.070 / 0.100
G11     78.3           42.7               12.6 +/-    1.17      17.5 +/-    1.17  0.240 / 0.160
G13     301.3          33.4               10.1 +/-    2.39      16.6 +/-    2.39  0.030 / 0.020
G17     211.6          43.6               17.4 +/-    0.98      23.9 +/-    0.98  0.050 / 0.040
G18     70.5           24.8               10.7 +/-    0.81      21.0 +/-    0.81  0.100 / 0.120
G19     212.3          21.3               18.3 +/-    2.01      39.0 +/-    2.01  0.150 / 0.210
G28     338.5          61.9               11.8 +/-    0.57      13.2 +/-    0.57  0.030 / 0.040
G30     86.8           77.3               13.9 +/-    0.30      14.2 +/-    0.30  0.070 / 0.070