PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/15-20:57:40
G03     191.5          25.8               12.6 +/-    2.14      24.2 +/-    2.14  0.250 / 0.460
G07     283.3          33.1                8.6 +/-    1.99      14.2 +/-    1.99  0.230 / 0.430
G08     148.2          21.5               14.9 +/-    2.61      31.6 +/-    2.61  0.110 / 0.180
G09     320.3          54.6               10.3 +/-    0.93      12.4 +/-    0.93  0.120 / 0.180
G16     45.6           46.3                8.8 +/-    1.05      11.7 +/-    1.05  0.050 / 0.080
G22     178.4          11.7               12.6 +/-    1.98      33.8 +/-    1.98  0.070 / 0.080
G23     76.4           82.4                8.7 +/-    1.03       8.7 +/-    1.03  0.060 / 0.070
G26     43.0           17.1                8.3 +/-    3.22      19.6 +/-    3.22  0.050 / 0.060
G27     106.4          30.5               12.9 +/-    2.28      22.3 +/-    2.28  0.200 / 0.180
G30     270.0          12.2               10.8 +/-   14.19      28.6 +/-   14.19  0.210 / 0.180