PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2018/05/24-18:57:50 G01 75.0 33.3 11.6 +/- 0.95 19.0 +/- 0.95 0.120 / 0.270 G07 135.3 34.6 14.5 +/- 1.14 23.2 +/- 1.14 0.070 / 0.210 G11 56.8 33.6 11.8 +/- 1.88 19.2 +/- 1.88 0.060 / 0.060 G13 279.1 37.8 14.7 +/- 2.04 22.2 +/- 2.04 0.050 / 0.070 G15 306.2 14.1 11.0 +/- 1.93 27.9 +/- 1.93 0.030 / 0.030 G17 227.3 62.9 15.5 +/- 0.77 17.2 +/- 0.77 0.030 / 0.030 G18 52.1 20.0 11.7 +/- 6.20 25.7 +/- 6.20 0.310 / 0.250 G19 221.7 37.1 15.7 +/- 1.66 24.0 +/- 1.66 0.230 / 0.200 G28 13.6 60.0 13.0 +/- 1.32 14.7 +/- 1.32 0.070 / 0.090 G30 131.4 64.6 14.1 +/- 0.38 15.5 +/- 0.38 0.080 / 0.100