PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/28-17:58:00
G01     99.0           29.2               15.7 +/-    1.44      27.9 +/-    1.44  0.100 / 0.340
G07     117.3          52.5               17.4 +/-    0.64      21.3 +/-    0.64  0.130 / 0.320
G08     41.9           15.5               11.9 +/-    1.60      29.4 +/-    1.60  0.020 / 0.050
G11     79.1           42.5               16.9 +/-    0.61      23.7 +/-    0.61  0.020 / 0.050
G13     302.9          32.9               17.9 +/-    1.19      29.5 +/-    1.19  0.040 / 0.030
G17     210.2          43.2               20.0 +/-    1.14      27.7 +/-    1.14  0.040 / 0.040
G18     72.2           24.8               14.6 +/-    0.86      28.7 +/-    0.86  0.040 / 0.080
G19     211.7          18.4               18.1 +/-    2.80      41.4 +/-    2.80  0.040 / 0.080
G28     333.9          61.8               16.3 +/-    0.88      18.3 +/-    0.88  0.030 / 0.080
G30     69.5           79.4               17.3 +/-    0.68      17.6 +/-    0.68  0.030 / 0.080