PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/27-19:58:00
G03     192.7          30.1               11.4 +/-    1.78      19.9 +/-    1.78  0.200 / 0.250
G07     278.7          30.2               11.0 +/-    1.02      19.2 +/-    1.02  0.150 / 0.350
G08     151.7          17.2               13.4 +/-    3.10      31.5 +/-    3.10  0.040 / 0.060
G09     319.5          49.8                9.6 +/-    1.36      12.1 +/-    1.36  0.040 / 0.060
G16     48.7           50.4               10.5 +/-    0.92      13.2 +/-    0.92  0.080 / 0.200
G22     179.6          15.6               11.7 +/-    0.94      28.8 +/-    0.94  0.070 / 0.180
G23     39.7           82.0                9.4 +/-    0.67       9.5 +/-    0.67  0.080 / 0.130
G26     43.0           21.0                8.7 +/-    1.26      18.6 +/-    1.26  0.080 / 0.120
G27     111.7          27.8               13.2 +/-    1.64      24.2 +/-    1.64  0.070 / 0.140