PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/07-17:27:50
G01     122.8          14.3               13.7 +/-    2.03      34.6 +/-    2.03  0.040 / 0.070
G07     79.2           63.9               11.9 +/-    0.56      13.1 +/-    0.56  0.040 / 0.070
G08     47.4           35.7                9.0 +/-    0.35      14.1 +/-    0.35  0.040 / 0.100
G09     178.4          32.7               13.1 +/-    1.89      21.7 +/-    1.89  0.050 / 0.100
G11     111.9          38.4               13.4 +/-    0.95      20.0 +/-    0.95  0.030 / 0.040
G13     319.4          16.2                9.9 +/-    1.78      23.9 +/-    1.78  0.030 / 0.040
G17     200.0          19.3               13.9 +/-    2.19      31.2 +/-    2.19  0.150 / 0.240
G18     97.4           18.6               12.4 +/-    1.05      28.2 +/-    1.05  0.150 / 0.320
G28     277.6          51.7               13.1 +/-    0.93      16.2 +/-    0.93  0.140 / 0.400
G30     342.4          66.2               10.5 +/-    0.59      11.3 +/-    0.59  0.110 / 0.350