PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/28-16:12:50
G01     52.8           26.9                8.0 +/-    2.14      15.1 +/-    2.14  0.040 / 0.070
G06     178.3          22.2               13.0 +/-    9.56      27.1 +/-    9.56  0.040 / 0.060
G07     144.7          12.3               11.6 +/-    3.07      30.7 +/-    3.07  0.060 / 0.220
G11     44.8           15.0                7.1 +/-   10.18      17.8 +/-   10.18  0.060 / 0.260
G13     256.2          32.0               13.4 +/-    0.82      22.5 +/-    0.82  0.040 / 0.030
G15     290.4          15.4               10.0 +/-    1.52      24.5 +/-    1.52  0.020 / 0.030
G17     310.7          79.8               12.1 +/-    1.22      12.3 +/-    1.22  0.060 / 0.120
G19     243.0          59.4               10.3 +/-   22.05      11.7 +/-   22.05  0.080 / 0.170
G28     47.6           54.1               11.3 +/-    2.20      13.7 +/-    2.20  0.070 / 0.090
G30     148.1          47.2               11.9 +/-    1.09      15.5 +/-    1.09  0.070 / 0.110