PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/04-17:58:00
G01     83.5           33.0               11.9 +/-    1.95      19.6 +/-    1.95  0.160 / 0.260
G07     130.3          40.9               12.8 +/-    0.61      18.3 +/-    0.61  0.390 / 0.320
G11     63.0           37.5               12.3 +/-    1.41      18.7 +/-    1.41  0.040 / 0.050
G13     287.9          37.3               15.4 +/-    2.09      23.4 +/-    2.09  0.030 / 0.050
G15     312.1          11.7               12.5 +/-    1.81      33.5 +/-    1.81  0.030 / 0.020
G17     219.6          56.8               14.7 +/-    1.20      17.2 +/-    1.20  0.030 / 0.020
G18     58.4           22.6               11.4 +/-    1.15      23.6 +/-    1.15  0.060 / 0.100
G19     217.6          30.4               15.2 +/-    2.48      26.4 +/-    2.48  0.060 / 0.100
G28     0.4            61.2               11.6 +/-    0.97      13.0 +/-    0.97  0.100 / 0.190
G30     119.8          71.3               14.1 +/-    0.94      14.8 +/-    0.94  0.090 / 0.190