PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/14-18:58:00
G01     97.6           29.8               10.8 +/-    1.11      19.0 +/-    1.11  0.090 / 0.310
G07     118.8          51.5               13.1 +/-    0.40      16.2 +/-    0.40  0.110 / 0.250
G08     42.0           15.0                8.0 +/-    1.53      20.0 +/-    1.53  0.030 / 0.040
G11     77.8           42.4               12.0 +/-    0.53      16.8 +/-    0.53  0.030 / 0.030
G13     301.7          33.4               11.3 +/-    1.10      18.4 +/-    1.10  0.030 / 0.050
G17     211.1          43.7               14.1 +/-    1.54      19.4 +/-    1.54  0.040 / 0.050
G18     71.0           24.8               11.1 +/-    0.80      21.7 +/-    0.80  0.040 / 0.070
G19     212.1          19.9               13.0 +/-    2.28      28.7 +/-    2.28  0.040 / 0.090
G28     336.7          61.9               10.6 +/-    0.71      11.8 +/-    0.71  0.040 / 0.060
G30     78.4           78.7               12.0 +/-    0.61      12.2 +/-    0.61  0.040 / 0.070