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                9.0 +/-    1.12      15.2 +/-    1.12  0.040 / 0.060
G07     127.6          39.3                9.6 +/-    0.93      14.2 +/-    0.93  0.050 / 0.060
G11     65.6           39.4                8.3 +/-    1.28      12.3 +/-    1.28  0.060 / 0.080
G13     291.4          37.6               14.3 +/-    2.19      21.6 +/-    2.19  0.060 / 0.080
G15     313.6          11.1                2.5 +/-   20.67       6.9 +/-   20.67  0.060 / 0.080
G17     215.2          53.3               12.1 +/-    0.96      14.7 +/-    0.96  0.060 / 0.080
G18     60.5           23.0                7.9 +/-    1.50      16.1 +/-    1.50  0.070 / 0.100
G19     214.6          30.1               11.3 +/-    2.66      19.8 +/-    2.66  0.050 / 0.100
G28     340.5          61.5                8.4 +/-    0.92       9.4 +/-    0.92  0.090 / 0.130
G30     113.7          72.4               10.2 +/-    0.94      10.7 +/-    0.94  0.140 / 0.120