PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/12-19:43:10
G01     76.7           33.3               13.6 +/-    0.78      22.3 +/-    0.78  0.070 / 0.170
G07     134.4          36.0               14.2 +/-    1.04      22.2 +/-    1.04  0.080 / 0.200
G11     58.2           34.8               11.9 +/-    0.95      18.9 +/-    0.95  0.060 / 0.110
G13     281.0          37.7               13.2 +/-    0.71      19.9 +/-    0.71  0.060 / 0.100
G15     307.1          13.9                8.7 +/-    2.41      22.2 +/-    2.41  0.050 / 0.120
G17     225.5          60.9               14.4 +/-    0.53      16.2 +/-    0.53  0.050 / 0.140
G18     53.5           20.7               11.0 +/-    1.82      23.7 +/-    1.82  0.030 / 0.050
G19     220.8          36.1               14.4 +/-    1.36      22.3 +/-    1.36  0.040 / 0.060
G28     11.2           60.3               11.3 +/-    0.53      12.8 +/-    0.53  0.040 / 0.090
G30     129.5          65.5               14.6 +/-    0.62      15.9 +/-    0.62  0.040 / 0.080