PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/23-16:58:00
G01     258.8          38.2                9.6 +/-    0.97      14.3 +/-    0.97  0.030 / 0.040
G03     316.7          41.2                8.4 +/-    0.98      11.9 +/-    0.98  0.030 / 0.030
G11     245.4          16.1                8.3 +/-    1.70      20.1 +/-    1.70  0.040 / 0.050
G14     52.1           46.0                6.9 +/-    0.89       9.1 +/-    0.89  0.040 / 0.050
G22     310.2          62.2                8.2 +/-    0.72       9.1 +/-    0.72  0.050 / 0.100
G23     282.6          16.9               -2.3 +/-    6.40      -5.4 +/-    6.40  0.040 / 0.080
G25     45.1           13.8                6.6 +/-    1.77      16.8 +/-    1.77  0.060 / 0.140
G26     140.8          33.0               12.6 +/-    0.85      20.7 +/-    0.85  0.060 / 0.120
G31     43.5           64.1                8.9 +/-    0.29       9.8 +/-    0.29  0.070 / 0.100
G32     72.5           26.1                8.4 +/-    1.36      16.1 +/-    1.36  0.070 / 0.110