PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/29-20:42:40
G01     46.1           22.2                9.3 +/-    0.70      19.4 +/-    0.70  0.150 / 0.260
G06     178.1          27.6               18.5 +/-    0.95      34.2 +/-    0.95  0.160 / 0.280
G11     43.5           10.4                9.6 +/-    3.30      26.6 +/-    3.30  0.040 / 0.050
G13     244.8          28.2               17.2 +/-    2.03      31.2 +/-    2.03  0.040 / 0.070
G15     278.3          14.9               13.0 +/-    2.12      32.5 +/-    2.12  0.150 / 0.580
G17     338.0          76.8               14.7 +/-    0.54      15.1 +/-    0.54  0.150 / 0.610
G19     254.6          64.0               16.1 +/-    0.57      17.7 +/-    0.57  0.060 / 0.150
G24     318.3          12.6                8.1 +/-    2.18      21.3 +/-    2.18  0.060 / 0.150
G28     53.4           54.0               10.9 +/-    0.57      13.2 +/-    0.57  0.080 / 0.130
G30     151.2          34.7               16.7 +/-    0.76      26.7 +/-    0.76  0.080 / 0.130