PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/17-09:13:10
G01     42.0           17.7                1.7 +/-    0.86       4.0 +/-    0.86  0.070 / 0.090
G06     174.2          35.4                6.2 +/-    1.02       9.8 +/-    1.02  0.070 / 0.080
G13     239.5          25.2                5.5 +/-    0.95      10.7 +/-    0.95  0.070 / 0.220
G15     273.5          13.5                3.6 +/-    1.23       9.3 +/-    1.23  0.070 / 0.200
G17     349.6          74.1                5.0 +/-    0.56       5.2 +/-    0.56  0.130 / 0.270
G19     268.7          69.0                5.0 +/-    0.59       5.3 +/-    0.59  0.130 / 0.310
G24     317.9          14.5                2.2 +/-    0.78       5.5 +/-    0.78  0.040 / 0.060
G28     56.9           54.2                3.5 +/-    1.01       4.2 +/-    1.01  0.030 / 0.060
G30     154.3          34.1                6.2 +/-    1.14      10.0 +/-    1.14  0.070 / 0.140