PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/07-19:28:00
G01     124.0          13.5               14.9 +/-    1.69      38.4 +/-    1.69  0.030 / 0.030
G07     75.0           65.1               12.2 +/-    0.52      13.3 +/-    0.52  0.030 / 0.030
G08     47.8           35.9               10.2 +/-    1.26      15.9 +/-    1.26  0.120 / 0.350
G09     178.4          33.8               12.9 +/-    1.02      21.0 +/-    1.02  0.120 / 0.350
G11     113.0          37.7               14.0 +/-    0.69      21.2 +/-    0.69  0.090 / 0.080
G13     319.9          15.0                9.7 +/-    2.97      24.1 +/-    2.97  0.130 / 0.080
G17     199.6          18.9               12.9 +/-    2.57      29.2 +/-    2.57  0.070 / 0.090
G18     98.1           18.1               12.6 +/-    1.61      29.0 +/-    1.61  0.070 / 0.100
G28     276.3          51.4               13.0 +/-    2.66      16.1 +/-    2.66  0.030 / 0.040
G30     338.6          64.3               10.9 +/-    0.89      11.9 +/-    0.89  0.040 / 0.030