PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/29-15:58:10
G01     59.6           30.0                9.5 +/-    1.83      16.7 +/-    1.83  0.040 / 0.040
G07     141.5          18.4               11.2 +/-    2.22      25.7 +/-    2.22  0.040 / 0.050
G11     48.0           24.1                7.9 +/-    1.69      15.7 +/-    1.69  0.110 / 0.160
G13     261.6          36.2               10.1 +/-    2.62      15.6 +/-    2.62  0.090 / 0.170
G15     293.6          16.4                8.2 +/-    2.33      19.7 +/-    2.33  0.120 / 0.240
G17     252.1          74.4               10.1 +/-    0.31      10.5 +/-    0.31  0.130 / 0.220
G18     41.6           12.3                7.3 +/-    1.76      19.5 +/-    1.76  0.030 / 0.030
G19     231.6          51.7               10.9 +/-    2.60      13.5 +/-    2.60  0.020 / 0.040
G28     25.2           59.4                9.5 +/-    0.31      10.9 +/-    0.31  0.270 / 0.310
G30     143.2          50.4               10.4 +/-    0.75      13.1 +/-    0.75  0.170 / 0.280