PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/17-11:12:40
G01     43.2           19.2                3.0 +/-    3.95       6.8 +/-    3.95  0.230 / 0.310
G06     174.6          33.6                4.2 +/-    1.91       6.9 +/-    1.91  0.160 / 0.330
G11     43.6           10.0                2.6 +/-    3.72       7.1 +/-    3.72  0.020 / 0.020
G13     241.2          26.3                5.3 +/-    1.59      10.0 +/-    1.59  0.030 / 0.020
G15     276.6          13.7                3.4 +/-    2.02       8.8 +/-    2.02  0.050 / 0.040
G17     339.0          75.7                4.8 +/-    0.72       5.0 +/-    0.72  0.040 / 0.040
G19     263.8          67.8                5.0 +/-    0.85       5.3 +/-    0.85  0.050 / 0.180
G24     318.2          13.3                1.5 +/-    1.38       3.9 +/-    1.38  0.060 / 0.090
G28     55.0           54.4                2.9 +/-    0.81       3.5 +/-    0.81  0.040 / 0.060
G30     153.4          34.8                5.4 +/-    1.01       8.5 +/-    1.01  0.040 / 0.050