PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/25-12:43:00
G01     44.5           20.6                4.7 +/-    2.27      10.3 +/-    2.27  0.230 / 0.270
G06     175.2          31.5                6.6 +/-    1.36      11.2 +/-    1.36  0.250 / 0.270
G11     43.7           11.1                4.7 +/-    3.51      12.7 +/-    3.51  0.070 / 0.050
G13     243.0          27.5                5.5 +/-    1.86      10.2 +/-    1.86  0.040 / 0.040
G15     278.6          14.2                3.8 +/-    0.86       9.6 +/-    0.86  0.060 / 0.040
G17     326.4          76.8                4.5 +/-    0.36       4.6 +/-    0.36  0.040 / 0.040
G19     259.0          66.4                6.2 +/-    1.02       6.7 +/-    1.02  0.270 / 0.120
G24     318.4          12.0               -2.9 +/-   16.14      -7.7 +/-   16.14  0.100 / 0.120
G28     52.6           54.9                4.7 +/-    0.33       5.6 +/-    0.33  0.100 / 0.290
G30     152.5          35.8                5.7 +/-    0.91       8.8 +/-    0.91  0.150 / 0.400