PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/22-11:42:40
G02     201.3          22.6                4.3 +/-    1.92       8.9 +/-    1.92  0.120 / 0.140
G06     166.6          58.5                5.2 +/-    0.49       6.0 +/-    0.49  0.100 / 0.120
G13     223.3          11.0                4.1 +/-    1.99      11.2 +/-    1.99  0.030 / 0.040
G17     23.4           58.5                4.5 +/-    0.95       5.2 +/-    0.95  0.040 / 0.030
G19     340.4          70.1                3.2 +/-    0.58       3.3 +/-    0.58  0.050 / 0.040
G24     307.9          30.9                4.7 +/-    1.50       8.0 +/-    1.50  0.050 / 0.030
G28     86.8           43.7                4.7 +/-    0.83       6.4 +/-    0.83  0.350 / 0.190
G30     158.0          12.7                4.2 +/-    1.69      11.0 +/-    1.69  0.420 / 0.210