PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/29-17:57:30
G02     204.0          35.8               11.6 +/-    2.59      18.1 +/-    2.59  0.060 / 0.090
G06     156.4          70.8                9.0 +/-    0.86       9.5 +/-    0.86  0.090 / 0.090
G12     307.5          15.1                6.0 +/-    2.21      14.8 +/-    2.21  0.050 / 0.180
G17     35.7           49.4                8.3 +/-    0.43      10.6 +/-    0.43  0.050 / 0.140
G19     7.5            63.6                8.1 +/-    0.60       9.0 +/-    0.60  0.050 / 0.110
G24     295.6          38.7                8.7 +/-    0.80      12.9 +/-    0.80  0.050 / 0.100
G28     101.3          34.8                8.6 +/-    0.64      13.7 +/-    0.64  0.200 / 0.390