PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/07-08:28:10
G08     266.4          17.8                4.5 +/-    2.81      10.3 +/-    2.81  0.250 / 0.250
G10     64.9           56.8                3.2 +/-    0.67       3.7 +/-    0.67  0.130 / 0.200
G11     310.3          18.4               -2.0 +/-   11.91      -4.6 +/-   11.91  0.030 / 0.020
G14     270.1          67.7                4.7 +/-    0.91       5.0 +/-    0.91  0.030 / 0.020
G18     311.2          34.5                3.5 +/-    1.35       5.5 +/-    1.35  0.040 / 0.040
G20     96.8           35.6                4.8 +/-    1.39       7.5 +/-    1.39  0.040 / 0.060
G27     232.1          15.6                4.6 +/-    2.57      11.3 +/-    2.57  0.130 / 0.230
G31     178.1          31.4                4.9 +/-    1.48       8.4 +/-    1.48  0.110 / 0.200
G32     326.7          74.2                4.7 +/-    0.66       4.9 +/-    0.66  0.080 / 0.100