PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/09-11:43:00
G01     44.0           20.1                3.2 +/-    2.35       7.1 +/-    2.35  0.270 / 0.510
G06     175.0          32.3                6.2 +/-    2.09      10.3 +/-    2.09  0.260 / 0.240
G11     43.7           10.9                3.1 +/-    2.71       8.5 +/-    2.71  0.030 / 0.030
G13     242.3          27.1                6.0 +/-    2.03      11.1 +/-    2.03  0.030 / 0.030
G15     278.5          13.9                3.7 +/-    1.35       9.5 +/-    1.35  0.040 / 0.040
G17     332.6          76.4                5.7 +/-    0.39       5.9 +/-    0.39  0.030 / 0.040
G19     260.7          66.9                6.2 +/-    0.76       6.7 +/-    0.76  0.090 / 0.280
G24     318.4          12.4               -0.5 +/-    9.90      -1.4 +/-    9.90  0.100 / 0.330
G28     53.2           54.8                4.4 +/-    0.79       5.3 +/-    0.79  0.080 / 0.090
G30     152.9          35.8                5.8 +/-    0.84       9.0 +/-    0.84  0.070 / 0.090