PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/02-12:27:50
G01     39.9           14.9                2.2 +/-    2.38       5.5 +/-    2.38  0.040 / 0.030
G06     173.3          40.1                5.0 +/-    0.78       7.2 +/-    0.78  0.040 / 0.030
G13     235.9          22.3                4.9 +/-    2.02      10.1 +/-    2.02  0.080 / 0.210
G15     271.4          11.8                4.4 +/-    2.08      11.9 +/-    2.08  0.080 / 0.140
G17     354.7          71.9                3.3 +/-    0.60       3.4 +/-    0.60  0.040 / 0.050
G19     281.7          70.8                1.9 +/-    0.70       2.0 +/-    0.70  0.040 / 0.050
G24     316.5          18.5                1.4 +/-    2.90       3.3 +/-    2.90  0.080 / 0.120
G28     64.8           51.7                2.6 +/-    1.26       3.3 +/-    1.26  0.090 / 0.120
G30     155.0          28.0                5.9 +/-    1.13      10.7 +/-    1.13  0.100 / 0.400