PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/10-18:42:40
G01     81.9           32.6               11.1 +/-    1.42      18.5 +/-    1.42  0.050 / 0.050
G07     131.1          33.6               13.2 +/-    1.20      21.5 +/-    1.20  0.060 / 0.050
G11     60.6           36.5               12.5 +/-    1.16      19.3 +/-    1.16  0.070 / 0.080
G13     286.1          38.3               16.0 +/-    2.10      24.0 +/-    2.10  0.060 / 0.090
G15     310.0          13.0               11.5 +/-    2.31      29.9 +/-    2.31  0.040 / 0.030
G17     218.9          59.9               12.7 +/-    1.43      14.4 +/-    1.43  0.040 / 0.030
G18     55.8           21.3               11.8 +/-    3.07      25.2 +/-    3.07  0.190 / 0.200
G19     217.1          33.5               13.4 +/-    1.88      21.9 +/-    1.88  0.090 / 0.250
G28     351.1          61.6               11.1 +/-    1.59      12.4 +/-    1.59  0.060 / 0.110
G30     122.8          68.5               13.1 +/-    0.45      14.0 +/-    0.45  0.070 / 0.110