PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/27-19:58:00
G01     69.8           32.5               11.2 +/-    0.81      18.6 +/-    0.81  0.070 / 0.150
G07     137.2          24.4               12.8 +/-    0.86      25.3 +/-    0.86  0.080 / 0.170
G11     52.4           29.8               10.2 +/-    0.64      18.0 +/-    0.64  0.120 / 0.350
G13     273.0          38.3               13.7 +/-    0.89      20.6 +/-    0.89  0.120 / 0.350
G15     301.4          15.7                8.1 +/-    1.94      19.8 +/-    1.94  0.050 / 0.060
G17     233.1          70.0               13.0 +/-    0.87      13.8 +/-    0.87  0.050 / 0.050
G18     47.0           16.7                8.4 +/-    1.07      20.0 +/-    1.07  0.080 / 0.150
G19     223.8          42.8               14.5 +/-    0.79      20.2 +/-    0.79  0.080 / 0.160
G28     11.3           60.6               10.5 +/-    0.49      11.9 +/-    0.49  0.050 / 0.090
G30     136.1          59.5               13.8 +/-    0.66      15.8 +/-    0.66  0.050 / 0.080