PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/22-10:58:10
G01     66.0           32.2                2.7 +/-    0.87       4.5 +/-    0.87  0.040 / 0.040
G07     139.6          26.5                4.3 +/-    0.95       8.2 +/-    0.95  0.040 / 0.040
G11     50.3           26.7                1.3 +/-    2.24       2.4 +/-    2.24  0.070 / 0.120
G13     268.7          37.1                5.4 +/-    1.51       8.3 +/-    1.51  0.040 / 0.110
G15     303.4          13.5                1.1 +/-    1.66       3.0 +/-    1.66  0.060 / 0.070
G17     244.2          74.4                4.4 +/-    0.73       4.6 +/-    0.73  0.070 / 0.080
G18     44.9           15.0                0.0 +/-    1.15       0.1 +/-    1.15  0.110 / 0.470
G19     227.0          41.2                5.7 +/-    1.42       8.1 +/-    1.42  0.110 / 0.360
G28     25.0           58.7                3.6 +/-    0.85       4.1 +/-    0.85  0.080 / 0.120
G30     139.9          59.5                5.2 +/-    0.95       6.0 +/-    0.95  0.090 / 0.100