PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/18-19:58:00
G01     90.5           31.3               12.6 +/-    0.89      21.4 +/-    0.89  0.030 / 0.030
G07     125.8          39.9               12.7 +/-    0.37      18.6 +/-    0.37  0.030 / 0.040
G11     67.8           39.7               11.0 +/-    0.41      16.1 +/-    0.41  0.030 / 0.080
G13     294.8          36.6               12.3 +/-    1.11      19.0 +/-    1.11  0.030 / 0.080
G15     315.3          10.1              -10.6 +/-    8.01     -29.5 +/-    8.01  0.060 / 0.060
G17     212.9          53.6               14.4 +/-    0.78      17.4 +/-    0.78  0.060 / 0.060
G18     62.2           23.0                9.6 +/-    0.95      19.6 +/-    0.95  0.150 / 0.130
G19     213.6          26.7               14.7 +/-    2.18      27.6 +/-    2.18  0.130 / 0.130
G28     338.1          61.6               11.0 +/-    0.83      12.4 +/-    0.83  0.070 / 0.170
G30     105.1          75.1               14.4 +/-    1.02      14.8 +/-    1.02  0.070 / 0.170