PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/14-20:27:50
G01     82.9           32.6               10.5 +/-    1.13      17.5 +/-    1.13  0.040 / 0.070
G07     130.6          34.5               12.7 +/-    0.47      20.3 +/-    0.47  0.050 / 0.080
G11     61.1           36.6               11.7 +/-    0.69      18.0 +/-    0.69  0.120 / 0.140
G13     287.1          38.1               15.5 +/-    1.30      23.2 +/-    1.30  0.090 / 0.140
G15     310.6          12.7               10.5 +/-    1.90      27.5 +/-    1.90  0.040 / 0.050
G17     218.3          60.2               13.4 +/-    1.07      15.2 +/-    1.07  0.040 / 0.040
G18     56.0           21.2               10.7 +/-    2.92      22.8 +/-    2.92  0.040 / 0.030
G19     216.8          32.5               14.4 +/-    1.47      23.9 +/-    1.47  0.040 / 0.030
G28     350.8          61.6               10.0 +/-    0.50      11.2 +/-    0.50  0.050 / 0.120
G30     120.9          70.1               12.9 +/-    0.69      13.6 +/-    0.69  0.050 / 0.090