PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/28-15:13:00
G01     86.9           31.8                9.9 +/-    0.98      16.7 +/-    0.98  0.030 / 0.090
G07     127.6          39.3                9.7 +/-    0.73      14.2 +/-    0.73  0.050 / 0.090
G11     65.6           39.4                8.6 +/-    0.65      12.7 +/-    0.65  0.060 / 0.060
G13     291.4          37.6                9.2 +/-    0.79      14.0 +/-    0.79  0.040 / 0.060
G15     313.6          11.1                6.7 +/-   14.12      18.2 +/-   14.12  0.050 / 0.090
G17     215.2          53.3               11.9 +/-    0.64      14.4 +/-    0.64  0.050 / 0.100
G18     60.5           23.0                7.7 +/-    0.80      15.8 +/-    0.80  0.090 / 0.130
G19     214.6          30.1               11.3 +/-    1.56      19.8 +/-    1.56  0.080 / 0.140
G28     340.5          61.5                8.4 +/-    0.84       9.5 +/-    0.84  0.050 / 0.070
G30     113.7          72.4               10.3 +/-    0.31      10.8 +/-    0.31  0.050 / 0.070