PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/23-15:43:00
G03     199.8          44.5               11.0 +/-    1.82      15.0 +/-    1.82  0.030 / 0.040
G07     266.6          22.2                8.6 +/-    1.99      17.9 +/-    1.99  0.040 / 0.040
G09     315.6          37.8                8.7 +/-    0.67      13.1 +/-    0.67  0.080 / 0.230
G16     64.5           59.7                8.6 +/-    0.70       9.8 +/-    0.70  0.160 / 0.280
G22     180.9          25.7               10.2 +/-    2.14      19.5 +/-    2.14  0.030 / 0.050
G23     356.1          74.1                8.8 +/-    0.54       9.2 +/-    0.54  0.030 / 0.050
G26     45.6           31.7                8.1 +/-    0.29      13.7 +/-    0.29  0.050 / 0.080
G27     124.4          19.0                9.0 +/-    1.22      20.4 +/-    1.22  0.060 / 0.090