PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/02-07:27:40
G01     119.5          16.0                5.0 +/-    1.32      12.1 +/-    1.32  0.050 / 0.040
G07     76.6           66.6                5.1 +/-    0.41       5.5 +/-    0.41  0.040 / 0.040
G08     46.8           35.3                3.1 +/-    0.67       4.9 +/-    0.67  0.030 / 0.030
G09     176.1          27.7                7.9 +/-    2.10      14.5 +/-    2.10  0.030 / 0.040
G11     112.3          40.1                6.4 +/-    0.45       9.2 +/-    0.45  0.100 / 0.330
G13     318.3          18.7                1.8 +/-    1.79       4.2 +/-    1.79  0.120 / 0.290
G17     200.8          20.3                5.2 +/-    0.93      11.3 +/-    0.93  0.090 / 0.190
G18     96.1           19.9                5.1 +/-    0.93      11.3 +/-    0.93  0.080 / 0.180
G28     278.4          50.9                5.1 +/-    1.29       6.4 +/-    1.29  0.080 / 0.250
G30     338.1          65.0                3.7 +/-    0.47       4.1 +/-    0.47  0.130 / 0.290