PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/14-19:28:10
G01     80.6           33.2               11.5 +/-    0.81      18.8 +/-    0.81  0.120 / 0.210
G07     132.1          38.9               13.3 +/-    0.95      19.7 +/-    0.95  0.120 / 0.200
G11     61.1           36.6               10.3 +/-    0.50      15.9 +/-    0.50  0.030 / 0.030
G13     285.1          37.5               12.0 +/-    1.06      18.3 +/-    1.06  0.030 / 0.030
G15     309.7          12.9                9.5 +/-    0.89      25.0 +/-    0.89  0.040 / 0.060
G17     222.0          58.0               13.6 +/-    1.03      15.7 +/-    1.03  0.040 / 0.060
G18     56.3           21.9                8.1 +/-    0.76      17.0 +/-    0.76  0.040 / 0.100
G19     218.9          33.1               14.4 +/-    1.15      23.6 +/-    1.15  0.060 / 0.110
G28     5.2            60.8               10.8 +/-    0.69      12.1 +/-    0.69  0.030 / 0.080
G30     124.6          68.5               12.8 +/-    0.34      13.6 +/-    0.34  0.030 / 0.060