PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/13-10:58:10
G02     206.4          43.2                5.1 +/-    0.73       7.1 +/-    0.73  0.040 / 0.040
G06     131.5          77.0                5.5 +/-    0.64       5.6 +/-    0.64  0.030 / 0.040
G12     311.9          23.9                3.1 +/-    0.71       6.1 +/-    0.71  0.090 / 0.100
G17     42.7           43.7                3.9 +/-    1.43       5.4 +/-    1.43  0.060 / 0.120
G19     20.6           58.5                4.9 +/-    0.76       5.6 +/-    0.76  0.070 / 0.130
G24     288.8          40.2                9.7 +/-    4.01      14.0 +/-    4.01  0.060 / 0.140
G28     107.0          32.1                5.9 +/-    1.30      10.0 +/-    1.30  0.090 / 0.080