PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/01-18:28:00
G01     73.4           33.2               11.5 +/-    0.68      18.9 +/-    0.68  0.080 / 0.220
G07     136.1          33.4               14.4 +/-    0.93      23.6 +/-    0.93  0.090 / 0.320
G11     55.7           32.7               10.1 +/-    0.66      16.7 +/-    0.66  0.040 / 0.090
G13     277.4          37.7               12.6 +/-    1.01      19.1 +/-    1.01  0.050 / 0.090
G15     305.3          14.3                9.1 +/-    2.73      23.1 +/-    2.73  0.040 / 0.050
G17     229.2          64.5               15.1 +/-    1.01      16.5 +/-    1.01  0.030 / 0.050
G18     51.0           19.4               10.0 +/-    0.97      22.2 +/-    0.97  0.030 / 0.060
G19     222.6          38.1               15.2 +/-    1.23      22.8 +/-    1.23  0.040 / 0.060
G28     15.8           59.8               11.2 +/-    0.56      12.8 +/-    0.56  0.060 / 0.120
G30     133.0          63.6               15.3 +/-    0.89      16.9 +/-    0.89  0.060 / 0.130