PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/14-20:43:10
G07     333.3          58.0               19.9 +/-    0.72      23.0 +/-    0.72  0.120 / 0.140
G08     103.6          52.8               22.8 +/-    0.60      27.8 +/-    0.60  0.070 / 0.130
G09     193.7          73.7               22.4 +/-    0.44      23.3 +/-    0.44  0.120 / 0.190
G11     147.6          12.7               24.8 +/-    1.39      65.0 +/-    1.39  0.100 / 0.140
G23     154.9          38.4               22.0 +/-    0.55      32.8 +/-    0.55  0.030 / 0.040
G27     53.8           30.8               17.6 +/-    2.10      30.3 +/-    2.10  0.040 / 0.040
G28     238.2          30.7               23.8 +/-    1.64      41.0 +/-    1.64  0.030 / 0.050
G30     304.5          38.3               19.0 +/-    1.44      28.4 +/-    1.44  0.030 / 0.040