PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/16-18:43:00
G01     101.1          28.4               11.8 +/-    0.91      21.3 +/-    0.91  0.150 / 0.170
G07     114.9          54.1               12.2 +/-    0.59      14.7 +/-    0.59  0.110 / 0.330
G08     41.9           17.6                8.5 +/-    1.34      19.8 +/-    1.34  0.030 / 0.030
G11     82.0           42.9               12.4 +/-    0.76      17.3 +/-    0.76  0.040 / 0.030
G13     304.7          31.8               10.1 +/-    0.99      17.1 +/-    0.99  0.040 / 0.040
G17     209.4          40.7               12.6 +/-    0.69      18.1 +/-    0.69  0.030 / 0.040
G18     74.4           24.9               11.9 +/-    0.96      23.4 +/-    0.96  0.050 / 0.040
G19     211.1          17.0                5.7 +/-   14.93      13.5 +/-   14.93  0.060 / 0.040
G28     330.2          61.7               10.4 +/-    0.42      11.6 +/-    0.42  0.100 / 0.160
G30     60.3           79.4               11.6 +/-    0.55      11.8 +/-    0.55  0.060 / 0.140