PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/24-19:57:30
G07     134.0          29.6               14.6 +/-    1.00      25.8 +/-    1.00  0.040 / 0.060
G11     56.6           33.7               10.9 +/-    1.33      17.8 +/-    1.33  0.040 / 0.060
G13     280.5          38.6               14.0 +/-    1.32      20.8 +/-    1.32  0.050 / 0.140
G15     306.4          14.4                8.9 +/-    1.79      22.4 +/-    1.79  0.060 / 0.120
G17     224.1          64.8               14.8 +/-    1.50      16.1 +/-    1.50  0.030 / 0.030
G18     51.6           19.4               10.0 +/-    0.92      22.4 +/-    0.92  0.030 / 0.040
G19     219.8          37.4               16.5 +/-    1.34      25.0 +/-    1.34  0.060 / 0.080
G28     0.5            61.3               10.9 +/-    0.56      12.2 +/-    0.56  0.060 / 0.100
G30     129.4          65.1               14.2 +/-    0.75      15.5 +/-    0.75  0.070 / 0.270